Home / 388,912.40-582,202.20-231,059.60

Finding the Fourth Proportional to 388,912.40, 582,202.20 and 231,059.60

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Solution

The fourth proportional to 388,912.40, 582,202.20 and 231,059.60 is: 345,896.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,912.40 : 582,202.20 = 231,059.60 : x
  2. Step 2: Convert to fraction form
    388,912.40/582,202.20 = 231,059.60/x
  3. Step 3: Cross multiply
    388,912.40x = 582,202.20 × 231,059.60
  4. Step 4: Simplify right side
    388,912.40x = 134,523,407,451.12
  5. Step 5: Solve for x
    x = 134,523,407,451.12/388,912.40
  6. Step 6: Final answer
    x = 345,896.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.